Oarlock



June 19, 1928.

A. SMITH OARLOCK Filed Sept. 6, 1927 cient oar lock, which permanentlyretains Patented June 19, 1928.

TES

ANDREWSMITH, OF MILWAUKEE, WISCONSIN.

' r oAmiooK.

' Application filed September 6, 1927. Serial No. 2171706;

This invention pertains to improvements in oar locks, and has primarilyfor its object the provision of a simple,du'rable, and efiithe oar inoperative position and allows the necessary movement of theoar' inthelock for feathering purposes. r p

Incidental to the foregoing, a further object is to provide an oar lockof the fore from its socket except when the oar is positionedlongitudinally withfrelation to the boat, thus preventing accidentaldislodgment and loss ofthe oar,which frequently results where it ispossible to remove the oar lock when the oar is in operative position atright angles to the boat. Y

Another object is to provide an anti-friction engaging ,means betweenthe oar lock andoar sleeve, which means allows for easier operation ofthe oarjand replacement in the event of wear upon the same.

A still furtherobjectfresides fin the novel structure of the sleeve,whereinbothmembers are formed'by the same'die, andare arranged tointerlock in assembly on. 'the oar, thus issuing a rigid assembly andevenly distributing all strain on the sleeve, which eliminates thepossibility of the attaching screws working loose.

With the above and other objects in view, which will appear as thedescription proceeds, the invention resides in the novelconchanges inthe precise embodiment of the struction, combination and arrangement ofparts substantially as hereinafter described and more particularlydefined by the ap pended claims, it being understood that such hereindisclosed invention may be made as come within the scope of the claims.

In the accompanying drawings is villustrated one complete example of thephysical embodiment of the present invention constructed according tothe best mode so far devised for the practical application of theprinciples thereof.

Embodiments of the invention are shown in the accompanying drawing, inwhich:

Figure 1 is a side elevation of an oar equipped with the presentinvention, the socket being in section to more clearly illustrate thestructural features. a

Figure 2 is a plan section through the oar lock. 1

Figure 3 is a transverse section through and in section, and

socket. v j Referring now to the accompanyingfdrawing the numeral '1 Idesignates 'a portion of aconventional oar towhich'the present invention' is attached, the same comprising an oar lock 2 provided withthe usual" shank going character in which means is provided l forpreventing the removal of the oar lock ,iiiner periphery vThe lock'Q onits the oar, with parts of the lock bro'ken-a w ay vided. with a pair ofopposed recesses 4, 1

which 'ecesses'freceive the ballsf5, adapted "to pro ect into acircumferentialgroove formed in thej oar sleeve 6.' The sleeve "6 ispreferably formedfro'm stamping] and comprises two sections 7, whichabut one another along a transverse center line, the sections beingspherical n shape. The ci'rcumferential groove 8 is 'formed "at rightangles to the longitudinal axis of the sleeve; The butting edges of thesleeve 7 are pro- "ides ivith to g 9 which projectzin the rece'sseslOformed on the' edge of"tliel'adjarv cent sleeve. Thus it will'beseenthat as -the sleeves are assembled upon the oar 1 the interlockingengagement of the sleeve sections provides a rigid assembly and anystrain upon one of the members will b6 evenly distributed'to bothsections, thus reducing the possibility of the attaching means, which inthe present instance comprises screws, becoming loosened. In. order toprevent removal lock, except when the car is in longitudinal positionwith relation to the boat, the socket of the oar 11 which receives theshank 3-is provided with a closure 12 at its lower end, which closurehas formed therein key-hole slots 13 for the reception of the reducedend 14 oi the shank 3, which end is provided with lat eral projections15. The projections 15 normally engage the end closure 12 to preventremoval of the lock therefrom until'the same is swung to such positionthat the oar is in a longitudinal relation to the boat, in whichposition the projections 15 pass through the i i key-hole slot.

As best shown in Figure 3, the balls 5, which project into thecircumferential groove 8 to hold the oar against longitudinal movement,are positioned below the lie i liqm thetfor gqing itwill be bvious nthtransverse axis of. the oar sleeve? 6. Fhis arrangement 1s essential 1norder to permit assernbllng of the sleeve on the oar. The

foregoing is accomplished byl first attaching. I 5 one of the sections 7of the sleeve to the top i a very mple, .Idnralole,- and efficient oarlock structure has 7 been, provided in g which; the ,oar is permanentlyheld, in. the lock and at ftheisa elti a t iversalqm v mfi the jthergbecanse ofAthe engageinentqiof the v.is lproviidedto allow all ofthezessential opernzitiqns, inclu'ding." feathering v oi the, pars. aIt,jwill further, beh seen thatinafsmuch ast-he 'ton'gues ipon theircorresponding edges 'and recesses forthe, reception of said;,t ong'ueson the r opposlteedgesg bothi'sleev'es; are ideneco t, of ma ac ure;,t0,, a minimum. j Eurto ngues' 9 with'the recesses 10', the sectionsofthei sleevelare. securely lockedtogether and (any strain exerted upon;one sectionv will be 7 distrihuted .to,. the adjacent section,v thuspreeventing oo ening of he att ched s re and disalignment of thesleeves.

', readily 1 i:be replaced, .andgit i obvious, th t guestin strncture nandmmay, therefore be fnformedif em a ,sirig1 j. whi h red c t sh theballs. 5 ,1 which lock {the sleeve wiil ilhthe oarglock beeome orn they,can

'upon the movable parts and materially facilitating-operationo'f -theoar.

I claim: v 1. The combination of an oar look, a-

, sphericalsleeve provided With a circumferential groove, spacedprojections carried by saidroalf lock ,for engagement insaid groove,

ashank: for said ,oarlock; projections carriech npon- {the; end [of said'shanln and'. a

' sock'et fonthe receptiOIl {of saidshank,said

socket being provided with, a, key-hole slot. (in f its lower .endtopelinilit the Withdrawal ofthe shank only When' the saidshank'projections, are, aligned with said. slot.

Q'F'Ifhe combination of, an woar lock pro- .vided, with spaced recesses,a split spherical a, sleeve} pridvlided ith a circumferentialgroove'ihalls;positionedoin said recesses for jfileeves 7 E are provided"with vprojecting engagement in said groove,-the correspondingedges;,ofisaidsleevesections being provided with, tongues-and recessesfor interlockingv ,',en'gagement ,When'thesleeves are assembled onia noar, aQdepencl-mg'shank' for said oar lock, projections onithe lower endof said shank, said socket; being, Provided, with a key-hole L slotjin'its" lower end to permit iv'ithdrawal of'the oar lockonlywhenthe Qshankprojections are aligned with said keyhole slot. I V v ln testimonyj thatI gclaim the Eforegoing I, have hereunto: set ,my. hand at 'Milwa'ukee,

in Ethe countyv of ,Milwaukee ,ancl State of QWisconsiri.

.ANDREW SMITH.

